Automobile-tire.



H. DALWGK.

AUTOMOBILE TIRE.

APPLlcATloN FILED 1uLY24.1917.

Patented Jan. l, 1918.

f Ill/11111111114 l ATTORNEY BY @my `the yordinary metallic band or rim, and it i is-here to'loe statedthat the sai'd'band or .rim fi-maybe dispensed with if ldesired;

,ployment of HERMANN'DALWIGK, Yorfsim ANmoivIo, TEXAS, Assieme Aor, omzfinnr imo HANNIBAL ,PIANTA, or Asim ANTonIo, ;rnK-AS. i

i AUTOMOBILE-MRE. v

I Application 1edJuIy24,1917. Seria1'No.'-182,467.

To all whom t may concern:

Be itknown that I, :HnRMA-NN'DALWIGK, a citizen 'off the 'United States,- residing at San Antonio, Hin the county of Bexar and State o'f'TeXas, -haveinvented new ,and useful `lmprovements :in AutomobileTires, of which the following isa Vspeciiica-tion.-

'This invention relates'to a spring itire for vehicle wheels, andthe .object of the'invention is to producea deviceofthis character which may be readily attached -to ganyordinary construction of vvehicle wheels, which will 'provide a cushion for the saidwheel.

'Other objects and advantages will'appear as the nature of the invention is more fully understood, reference being had tothe accompanying' drawings, in which, Y

Figure 'l is an approximately fragmentary central vertical longitudinal view taken through the improvement as appliedto a vehicle wheel. i'

Fig. 2 is a sectional view approximately on the line 2 2 oil/Fig. `1,.and

Fig. 3 isa sectional view approximately on `thelineS-B ofFig. l.

In lthe drawing, A the numeral n:ladesignates a portion ofan ordinary vehicle wheel, 3 one ofthe cspokes'therefor2 therfelly and emplates the eman inner'ixed rim 15. fflhefi-nner face of this rim 5,*.at the Aouter edges ,or ycorners thereof, is ,beveled or inclined, as illustratedinfFig. 2 of the drawings, and these beveledsurfaces:arecontacted by the My improvement cont `outer angular edges of "latcring.members6 and 7 arranged at theopposite sides of the felly 2 -andsecured to the saidfelly, ascindicated bythey characters 7. "The 'fixed rim section 5 is, upon its opposite sides, provided withannularanges 8 and 9,;theiiange 9, being disposed in alinement with the and the said flanges, at desired intervals are provided with alining openings, the openings in the flange 8 being threaded, and the outer face of the flange 9 being reamed at the openings provided therein, the said openings being designed to receive screw-bolts l0, the heads of the said bolts in the referred to reamed portions and surrounding the openings of the flange 9 and the said threaded ends of the bolts engaging the threads in the openings of the Hangs Vliange, ,6,

:Speciication of Letterslatent.

."iia'nge 18 of Patented aan. `1, y1191s.

i8. The numerals ll vdesignate sleeves, 4one 'fbeingarranged :upon l each ofthe Vscrew bolts fIO'betWeen fthe iianges 8 and 9 Iof :the iixed rim 5, and the purpose of the foregoing construction and arrangement willpresently be se-tfforth.

The outer or tire carrying rim is indicated by :the numeral 12, and fis, of course, arranged concentric with and 'surrounds the fixed rim-5. The tire carrying rim l2 `has its outer surface, A'upon vthe opposite vedges thereof, preferably provided with flanges 13 to engage with-fthe resilient or rubber vtread member 14, andthe vsaid tread carryingrim fis provided lwith* inturned lianges 15 and 16 respectively, which are disposed in alinementwith the annular liianges 8 and9 ofthe-fixed rimV -5 and directed towardthe said flange The flanges yl5 and -16 are provided, at spaced intervals-with openings arranged'linl a line with theopeningsin the iianges 8 and 9,*and1the openings Ain the "flange l5 Vmay be threaded. 'Through the aliningopenings in the said flanges ^l'5 and '16 is passed bolt members '17, the threads of the said v bolt-*maybe engaged ywith -the :threadsin the openings of theiiange l5, but :the saidthreaded ends have yalso screwed thereon nuts '18. The .nuts are designedto force an annularv plate 19 against the outer surface oftherflange'l, the platebeing of the width suiiicie-nt 'to Contact with 'the the ixedrim 5, .and\the head of thebolt'l?l also engages with a similar plate 2O which isof a'wi-dth suiicient to overlie 4j the outer `surface of the iiangel 9 of theftixed rim 5; 'The plates-19 and 20 .are jdesignedto protect the'inner or channeled surfaceof the )fixed and 'tire carrying rims. Surroundevent, the ends to be received ingthe; portion ,of thefboltvl arranged between thelanges'l 'andil is a sleeve 21.

'The rims may, ofcourse, be constructed of split members andalsothe said rims may be formed of sections,`i'f `desired,in either of the same are suitably connected, and in order to retain the said rims in a proper spaced relation with each other and also to force the desired resiliency to the tire, I provide suitable spring means which will now be explained in detail.

The spring spacing means between the fixed and tire carrying rims is in the nature of hair-pin springs 22, the longitudinal arms 23-23 of which being rounded outwardly from their ends, one of their ends being Y the drawings, I may arrange of the hair-pin springs rounded upon itself as at 24 to its connection with the arms site end,in` the deviceVY drawing, is formed by upsetting the exs tremity of one of the arms 23 as indicated by the numeral 25 and providing the ex'- tremity of the second arm or limb 23 transverse rounded depression 26. The extremities 25 and 26 of the limbs or arms 23 are received between the suitable plates 27, and the numeral 28 .designates the connecting element for vthe plate which may-be in f the nature of a bolt or rivet which passes between the upset portion 25 of one ofthe limbs 23 and the depression extremity 26 of the other limb of the spring. lt, of course, isto, be understood that the springs 22 may be connected, as a single element, but in any event, the yends of the said spring are of a size to be at all times spaced away from the inner surfaces of the fixed and of the tire carryin rimsgvrllhel outwardly bulged or rounde limbs 23 of the spring 22 are centrally incurved as at 29, whereby to receive thereinthe respective sleeves 11 and 21 carried by the bolts 10 and 17,. The out bulged portions Aofthe llimbs 23 of the spring 22, opposite the referred to incurved orroun ded portions- 29 contact with the inner surface yof the respective rims 5 and. 12, and the spring 22 is of a width suiiicient to be snugly received inthe channels or between the lianges of the fixed rim 5 and the tire carrying rim 12. i Y Y If desired, and as illustrated in Fig. 1 of between each 22, a helical spring v 30 having their opposite ends engaged by lugs 31 provided `upon blocks` 32` which are arranged diametrically opposite each other and secured to the respective rims 5 and 12, and from the foregoing description, it will be seen that the engagement of the limbs23 of the spring 22 with the lsleeves11 and 21 will not only -cause rounded inwardly toward each other as at 29, but by virtue of Ycontact with the walls provided by the said rounded or bulged pory Vtions of the yspring ywith the said sleeves, will hold the spring 22 against longitudinal movement, while, as stated,

spring being equal to the distance between c cpies of thislpatent'may' be obtained for 23-23, while the oppol" illustratedy by the with a r tive rims, and means,

the said limbs to be the width of the the flanges of the respective rims will prevent a lateral movement of the said spring. It is to be understood .that the tire carrying rim maybe made in two sections to facilitate the placing of the springs and a solid rubber tire, if the latter is used.

such construction of tire is not used, and the steel rim is retained, the rim may be cast l solid. Y

Having thus 'described the invention, what I claim is: Y Y

1. vIn a'spring wheelfa xedv rimk and a ftire carrying rim surrounding the fixed rim, a pluralityrof hair-pin springs arranged .be-

tween and `contacting with the rims, the longitudinal limbs of .said springs being centrally roundedinwardly, and elements car-` ried by the respective rims engaging in the said rounded portions of the springs.

2. In a spring tire for wheels, a flanged fixed Vrim and a flangedtire'carryingrim surrounding the ,fixed rim, a plurality of hair-pin springs resting between'the flanges ofthe rims, eachof said hair-pin springs havingvits longitudinal limbs rounded outwardlyV from V Athe ends thereof whereby to contact with .the innersurface of the respeccomprisingv elements passing transversely through the flangesof .the respective rims and engaging centrally with the referred to limbs of the springs whereby to centrally depress the'V said limbs and to retain the springs against longitudinal movement with respect to the rims.

3. In a spring wheel, a fixed flanged rim and a flanged tire carrying rim surround-V ing the fixed rim, oppositely disposed bolt members passing through the flanges of the respective rims, sleeves surrounding the bolts between the rims, a plurality of hairpin springs between the rims andfof a width to contact with the flanges of the rim, the longitudinal limbs of each of said springs contacting'with the inner surface of the respective rims, and the said longitudinal limbs centrally engaging with the sleeves .of

the respective bolts, whereby vto depress the said central portions of the limbs .and toretain the springs against longitudinalfmovement with respect tothe tire.

In testimony ll-Illith/IANN DALWlGK.

ve cents each, by addressing the ,fCommissionerof Patents, Washington, D. C. v v

whereof I affix mysignature. i 

